The Pilot Dr. Grip G-Spec Frost mechanical pencils feature the fun shaker mechanism that allows you to extend lead with a shake of the pencil body! You can also advance lead with the top knock button, which covers the included eraser. Like the other Dr. Grip items, these pencils have the ergonomic shape and feel that Dr. Grip is known for. The soft tints of this "Frost" line have matte-finish colored grips and bodies. They will be a fashionable addition to your writing arsenal. Multiple colors and eraser refills available.